The hotel is for a couple and two kids (just 3 and 7 yrs old). I assume twin room is required for Osaka one. Most probably the Japanese style one in Kotyo will be calculated by head count. Any recommendations or experience for sharing?
You may try for New Hankyu Japanese room, but you need to book it through the internet site of the hotel. The room can accomodate 2 - 4 people and the charge that I have once paid was 12,000 per room per night (tax included but no breakfast).